Quarterback Joe Flacco has engineered a commanding postseason with eight touchdowns and no interceptions in three playoff games. Flacco hasn't committed a turnover since throwing an interception and losing a fumble Dec. 16 in the first half of a 34-17 loss to the Denver Broncos. That was Caldwell's first game as offensive coordinator and his first NFL experience calling plays.

During the playoffs, the Ravens have averaged 425.3 yards and 30 points a game.

"He's calling plays, so it has his stamp on it, his flavor on how he calls the game," six-time Pro Bowl center Matt Birk said. "We've had success. He's done a great job. Tough situation for him, too, coming in his first year here and then in the offense. It's not like we changed everything we were doing. He just kind of took the controls and obviously has done a nice job."

The Ravens have also hired well-respected former Philadelphia Eagles offensive line coach Juan Castillo as a consultant to help them prepare for their Super Bowl matchup against the San Francisco 49ers. Then, Castillo's title will become run-game coordinator.

Castillo was fired this season after an unsuccessful stint as the Eagles' defensive coordinator.

His addition to the staff doesn't come as a surprise considering that Castillo has been a guest of Harbaugh's at Ravens home games at M&T Bank Stadium since being dismissed by the Eagles.

Harbaugh said he doesn't anticipate any defections from the coaching staff for next season.

"Our staff will stay intact next year, unless something changes, but all the guys that want to be here will be here," Harbaugh said. "To my knowledge, they all want to be back. I think that's a profound positive for our team with continuity."